Yes these little frogs are cute. They have suction cup feet and will climb on window glass at night to chase after bugs. Cute and also LOUD. Croak Croak Croak at 2AM in the morning.
Sorry, Cuban Tree Frogs are a pest, because they are taking-over here in Central Florida.

Description: Many people have reported that after they first noticed a Cuban treefrog in their yard, they noticed the gradual disappearance of the other frogs, toads and even lizards. That's because Cuban treefrogs are voracious eaters -- and unfortunately they eat Florida's native frogs, toads, and lizards, in addition to insects and spiders. In fact, Cuban treefrogs are SO successful at taking over habitat and eating Florida's native species that they are considered an invasive exotic (non-native) species -- they are a threat to the biodiversity of Florida's native ecosystems and wildlife.